#include"Date.h"

Date::Date(int year, int month, int day)
{
	_year = year;
	_month = month;
	_day = day;
}

bool Date::operator<(const Date& d)
{
	if (_year < d._year)
	{
		return true;
	}
	else if (_year == d._year && _month < d._month)
	{
		return true;
	}
	else if (_year == d._year && _month == d._month && _day < d._day)
	{
		return true;
	}

	return false;
}

bool Date::operator==(const Date& d)
{
	return _year == d._year && _month == d._month && _day == d._day;
}



bool Date::operator<=(const Date& d)
{
	return *this < d || *this == d;
}

bool Date::operator>(const Date& d)
{
	return !(*this <= d);
}

bool Date::operator>=(const Date& d)
{
	return !(*this < d);
}

bool Date::operator!=(const Date& d)
{
	return !(*this == d);
}

int Date::GetMonthDays(int year, int month)
{
	int daysArr[13] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
	if (month == 2 && (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
	{
		return 29;
	}
	else
	{
		return daysArr[month];
	}
}

Date& Date::operator+=(int day)
{
	_day += day;
	while (_day > GetMonthDays(_year, _month))
	{
		_day -= GetMonthDays(_year, _month);
		_month++;
		if (_month > 12)
		{
			_year++;
			_month = 1;
		}
	}

	return *this;

	/**this = *this + day;
	return *this;*/
}

Date Date::operator+(int day)
{
	Date tmp(*this);
	tmp += day;

	return tmp;

	/*tmp._day += day;

	while (tmp._day > GetMonthDays(_year, _month))
	{
		tmp._day -= GetMonthDays(_year, _month);
		tmp._month++;
		if (tmp._month > 12)
		{
			tmp._year++;
			tmp._month = 1;
		}
	}

	return tmp;*/
}


Date& Date::operator++()
{
	*this += 1;
	return *this;
}

Date Date::operator++(int)
{
	Date tmp(*this);
	*this += 1;
	return tmp;
}
